| Castel Gandolfo to Gavirate | 344.70 mi (554.73 km) |
| Castel Gandolfo to Gavorrano | 120.58 mi (194.05 km) |
| Castel Gandolfo to Gela | 334.42 mi (538.19 km) |
| Castel Gandolfo to Gemona del Friuli | 314.34 mi (505.89 km) |
| Castel Gandolfo to Genoa | 262.84 mi (423.00 km) |
| Castel Gandolfo to Genzano di Roma | 3.73 mi (6.00 km) |
| Castel Gandolfo to Gessate | 308.06 mi (495.78 km) |
| Castel Gandolfo to Ghedi | 279.02 mi (449.04 km) |
| Castel Gandolfo to Giarre | 308.17 mi (495.95 km) |
| Castel Gandolfo to Giaveno | 350.06 mi (563.36 km) |
| Castel Gandolfo to Giffoni Valle Piana | 138.27 mi (222.52 km) |
| Castel Gandolfo to Ginosa | 230.01 mi (370.16 km) |
| Castel Gandolfo to Gioia del Colle | 231.72 mi (372.92 km) |
| Castel Gandolfo to Gioia Tauro | 286.12 mi (460.47 km) |
| Castel Gandolfo to Giovinazzo | 211.46 mi (340.32 km) |
